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https://issues.apache.org/activemq/browse/AMQNET-241?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ted Carroll updated AMQNET-241:
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Attachment: NMS_Failover_CPU_Spike1.patch
> NMS Failover causes CPU utilization to spike if ActiveMQ is stopped.
> --------------------------------------------------------------------
>
> Key: AMQNET-241
> URL: https://issues.apache.org/activemq/browse/AMQNET-241
> Project: ActiveMQ .Net
> Issue Type: Bug
> Components: ActiveMQ
> Affects Versions: 1.2.0
> Environment: .NET 3.5
> Reporter: Ted Carroll
> Assignee: Jim Gomes
> Attachments: NMS_Failover_CPU_Spike1.patch
>
>
> 1) Configure a simple program that attempts to connect to ActiveMQ with the
> url "activemq:failover:(tcp://localhost:61616)"
> 2) Make sure activemq is not running on the local host
> 3) Try to connect.
> 4) Notice that the CPU utilization in the sample program is high.
> 5) Start ActiveMQ.
> 6) Notice that the connection is successful but the CPU utilization remains
> high.
> Expected:
> I expect, potentially, an initial spike in CPU utilization but not sustained
> high CPU.
> Diagnosis:
> In FailoverTransport.DoConnect() there is the following if statement:
> if(ConnectedTransport != null || disposed ||
> connectionFailure != null)
> {
> return false;
> }
> else
> it apears that connectionFailure is set and never reset. Then the
> FailoverTask.Iterate() calls into DoConnect only to return false immediately
> every time.
> I have attached a patch, but I would be uncomfortable calling it a long term
> solution as I've not had the time to fully understand the code in question.
> However, it seems to improve the behavior.
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